在GMDSS中船舶可使用的紧急无线电示位标有()种。
A、4
B、3
C、2
D、1
参考答案:B
被誉为“杂交水稻之父”的是( )
A.袁隆平
B.达尔文
C.巴斯德
D.孟德尔
13.-Where will you start your work after graduation?
-Mum, it's not been decided yet. I_______continue my study for a higher degree.
A.can
B.must
C.would
D.Might